A owes B the amount of P1M. C wrote B that he would take care of the obligation as soon as A had made shipment of copra to the USA. A failed to make the shipment. Is C liable?

• A. Yes, because he assumed the obligation voluntarily;
• B. No, because he did not assume but merely committed to take care of the debt;
• C. No, because the suspensive condition did not happen;
• D. Both B and C.